In 2018, the fitness industry generated an estimated $94 billion in revenue, with its projected value increasing in future models. Simply put, fitness is one of the most popular and profitable industries out there today. Everybody is interested in improving their health and looking at their best, so companies dealing with fitness employ newsletters that keep their audience up-to-date. Fitness blogs, athletic fashion, weight-loss tips, and exercise equipment are amongst the most popular themes for fitness newsletters. Below you can find an array of relevant newsletter examples from every type of business and organization that deals with fitness.